My First Girlfriend is a Gal (2017)

Junichi "Jun" Hashiba is an uncool high school student who frets about wanting to lose his virginity. Egged on by his friends, Jun goes on his knees and confesses his love to a classmate named Yukana Yame. The confession surprisingly works and the couple goes out. However, Jun finds himself in uncharted waters with Yame, a trendy and fashion-conscious "gal" (gyaru).